code: def testSiblingsInvalidOutputKeys(self):
      result = self._siblings(
          self.model,
          output_keys=["examples", "transform_graph", "fake_key"],
      )
      self.assertArtifactMapsEqual(
          result,
          {
              "root_artifact": [self.model],
              "examples": [],
              "transform_graph": [],
              "fake_key": [],
          },
      )
  
file_path: tfx/tfx/dsl/input_resolution/ops/siblings_op_test.py
imports: from typing import Sequence
  import tensorflow
  from tfx import types
  from tfx.dsl.input_resolution.ops import ops
  from tfx.dsl.input_resolution.ops import test_utils
label_desc: Use image node_id 9 for calling the SiblingsOpTest obj's underlying member method code with example usage: obj.testSiblingsInvalidOutputKeys() without return types